This column has previously focused on African-American genealogy blogs, in the articles Shout-outs to African-American Genealogy Blogs and More shout-outs to African-American genealogy blogs. A third edition soon forthcoming will spotlight several new genealogy blogs. The responsible genealogist, however, would be advised to learn more about United States history, including how it affected African-Americans. History blogs are a vital source for keeping up with current perspectives as well as newly available historical resources, many of which may provide genealogically useful information.
United States County Maps--Maps showing all the county boundries changes for each year overlayed with past and present maps so you can see the changes in county boundries and State Department of Transportation Maps
The PBS program "American Experience" is a wonderful series of documentaries about the history of the United States. The series also has a remarkable online presence, often creating unique sites for each episode of the series.